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24 Cards in this Set
- Front
- Back
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XMSN Oil Pressure Limits
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70 PSI Maximum
30 to 70 PSI Normal 30 PSI Minimum |
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XMSN Oil Temperature Limits
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110° C Maximum
15° to 110° C Normal 15° C Minimum |
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Engine Oil Pressure Limits
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130 PSI Maximum
115 to 130 PSI above 94% NG 90 to 130 PSI 78 to 94% NG 50 to 130 PSI idle to 78% NG 50 PSI Minimum |
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Engine Oil Temperature Limits
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107° C Maximum
0° to 107° Normal 0° Minimum |
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Fuel Quantity
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0 to 100 lbs low fuel
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NG (Gas Producer) Limits
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106% 10-second transient
105% maximum continuous 63 to105% continuous |
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(EQ) Engine Torque Limits
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121 to 131% 2-second transient
112 to 121% 10-second transient 100 to 112% 30-minute limit 0 to 100% continuous |
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Airspeed (Indicated) Limits
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125 KIAS Maximum VNE - refer to fig 5-2.
0 to 125 KIAS Normal operation |
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NR Rotor Limits
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TRANSIENT:
107 to 125% 5-second transient CONTINUOUS OPERATION: Autorotation: 107% maximum 90% minimum Powered Flight: 107% maximum 100% normal 93% minimum |
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NP Power Turbine Limits
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107 to 112% 15-second transient
107% maximum 100% normal 71 to 91% transient operation only. |
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Engine Limitations
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Engine limitations consist of torque (ENG TRQ%), turbine gas temperature (TGT), and rpm (NG and NP). Additionally, excessive torque or TGT will be indicated by associated WARNING messages on MFDs. These messages, peak values, and durations are recorded in CDS memory.
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Fuel Operations Limits
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Standard fuel is JP-8; no restrictions are imposed.
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Starter Limits
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Starter engagement shall not exceed the times specified in the following schedule:
EXTERNAL: 40 sec ON 30 sec OFF 40 sec ON 30 sec OFF 40 sec ON 30 min OFF (cool down) BATTERY STARTS: 60 sec ON 60 sec OFF 60 sec ON 60 sec OFF 60 sec ON 30 min OFF (cool down) |
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Towing Weight LImitations
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The spread restraint strap must be installed at gross weights above 4,100 lbs over rough terrain and above 4,500 lbs over smooth, prepared surfaces.
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Airspeed Limitations - Forward
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The speed for any and all maneuvers shall not exceed the level flight velocities as stated on the airspeed operating chart (Fig 5-2).
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Airspeed Limitations - Sideward and Rearward
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Maximum sideward and rearward airspeed is 35 knots; however, this may be reduced by lateral CG imbalances. Lateral CG condition is determined by Tables 6-3 and 6-4 and applied to wind limitations on Figure 5-3.
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Airspeed Limitations - Inlet Shields
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When operating with aft panels removed, the maximum rearward airspeed shall be as shown on the rearward airspeed limitation diagram ( fig 5-4). The envelope restricts airspeed to a maximum of 20 knots when relative wind is from 45° either side of the tailboom. A maximum sideward airspeed of 35 knots is authorized, except for rocket firing as noted elsewhere.
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Flight With Doors Removed
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a. The helicopter shall no be flown with only one crew door removed.
b. The helicopter shall not be flown with either avionics compartment access door removed. c. For flight with crew doors removed, maximum permissable speed (VNE) is 110 KIAS (Fig 5-2). |
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Prohibited Maneuvers
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a. Flight manuevers causing a negative "G" load are prohibited.
b. The speed for any and all maneuvers shall not exceed the level flight veloctities as stated on the airspeed operating limits chart (fig 5-2). c. Aerobatic maneuvers intentionally exceeding pitch or roll angles greater than +/- 30° or +/- 60° respectively are prohibited. d. Mast torque is limited to 95% in forward flight above 60 KIAS. |
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Slope Landing and Takeoff Limits
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a. Nose downslope - 5°.
b. Left skid, right skid, or nose upslope - Limits are dependent on lateral CG condition as determined by Tables 6-3 and 6-4. For condition A, 8°; for condition B and C, 5°. |
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Environmental Restrictions
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a. This helicopter is restricted to visual flight conditions.
b. Intentional flight into icing conditions is prohibited. c. Cover plate shall be installed for flight when MMS is removed regardless of environmental conditions. d. The OH-58D has not been tested in a cold weather environment. Until such testing is conducted, the following limitations apply: (1) If the free air temperature (FAT) is below -17°C (2°F), external power should be used for starting the aircraft. |
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Turbulence
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a. Intentional flight into severe or extreme turbulence is prohibited.
b. Intentional flight into moderate turbulence is prohibited when the weather report or forecast is based on fixed wing aircraft above 12,500 lbs gross weight. c. Intentional flight into moderate turbulence is permitted when the weather report or forecast is based on rotary-wing aircraft or fixed wing aircraft under 12,500 lbs gross weight. |
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Wind Limitations
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a. Engine starting - 45 knots maximum.
b. Maximum crosswind and tailwind for hover is 35 knots, however this may be reduced by lateral CG imbalances. Lateral CG condition is determined by Tables 6-3 and 6-4 and applied to wind limitations on Fig 5-3. c. Maximum tailwind for hover without inlet blast shields installed is 20 knots. d. Heading hold engaged - 20 knots maximum. |
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CMWS NVG Operating Limitations
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Forward infrared (IR) position lights are obscured during night/NVG formation flight operation at distances of 3-5 rotor discs (Fig 5-5).
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